LM3S2139 Luminary Micro, Inc, LM3S2139 Datasheet - Page 472

• Manufacturer Part Number: LM3S2139
• Description: Lm3s2139 Arm Microcontroller
• Manufacturer: Luminary Micro, Inc

Electrical Characteristics
20.2.3
20.2.4
472
Analog-to-Digital Converter
Table 20-9. ADC Characteristics
a. The ADC reference voltage is 3.0 V. This reference voltage is internally generated from the 3.3 VDDA supply by a band
b. t
Analog Comparator
Table 20-10. Analog Comparator Characteristics
Table 20-11. Analog Comparator Voltage Reference Characteristics
Parameter Name
Temperature stability (-40°C to 85°C)
Temperature stability (-40°C to 105°C)
Motional capacitance (typ)
Motional inductance (typ)
Equivalent series resistance (max)
Shunt capacitance (max)
Load capacitance (typ)
Drive level (typ)
Parameter
V
C
N
f
t
f
INL
DNL
OFF
GAIN
Parameter
Parameter
ADC
ADCCONV
ADCCONV
ADCIN
ADCIN
ADC
C
gap circuit.
V
R
V
T
R
T
MRR
CM
MC
OS
RT
HR
LR
= 1/f
ADC clock
Parameter Name
Maximum single-ended, full-scale analog input voltage
Minimum single-ended, full-scale analog input voltage
Maximum differential, full-scale analog input voltage
Minimum differential, full-scale analog input voltage
Equivalent input capacitance
Resolution
ADC internal clock frequency
Conversion time
Conversion rate
Integral nonlinearity
Differential nonlinearity
Offset
Gain
Parameter Name
Input offset voltage
Input common mode voltage range
Common mode rejection ratio
Response time
Comparator mode change to Output Valid
Parameter Name
Resolution high range
Resolution low range
27.8
14.3
±25
±25
120
100
a
10
16
Min
-
-
Preliminary
V
V
Nom
DD
DD
37.0
19.1
±25
±25
160
100
10
16
/32
/24
Value
Min
50
0
Max
-
-
-
-
-
55.6
28.6
±25
±25
200
100
10
16
Nom
±10
Unit
LSB
LSB
-
-
-
-
V
63.5
32.7
±25
±25
220
100
Min
219
DD
3.5
Max
10
16
±25
10
-
-
-
-
-
-
-
-
-
-
-
1
-
-1.5
Nom
250
10
Units
1
4
-
-
-
-
-
-
-
-
-
Unit
ppm
ppm
mV
mH
µW
dB
µs
µs
pF
pF
pF
V
Ω
Max
-1.5
281
3.0
1.5
4.5
16
±1
±1
±1
±1
0
-
-
V
V
V
V
pF
bits
MHz
t
k samples/s
LSB
LSB
LSB
LSB
ADC
Unit
cycles
b
July 25, 2008